Backroom

The Backroom is a game mechanic introduced in Five Nights at Wario's 2. It is used to hide from the enemies when they get into The Office. To go into the Backroom, the player must click the green bar with an arrow on it, on the bottom of the screen. While the player hides in it, they have to charge up a generator on the right so the power won't go out. If the player charges the generator while an enemy is inside The Office, the player will be killed.

Trivia

This mechanic appears to function like the Mask from Five Nights at Freddy's 2.

How to survive

Do not hide in the Backroom when an enemy is about to enter The Office.

Do not charge up the generator while an enemy stays in The Office.

Do not hide in the Backroom for too long, or else the player will be killed by a random enemy.